<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        .main {
            text-align: center;
        }
    </style>
</head>
<body>
    <div class="main">
        <label for="selected">Select theme:</label>
        <select name="" id="selected">
            <option value="tomato">tomato</option>
            <option value="pink">pink</option>
            <option value="skyblue">skyblue</option>
            <option value="light">light</option>
            <option value="orange">orange</option>
        </select>
        <h1>This is my website</h1>
    </div>

    <script src="../js/更多颜色主题.js"></script>
</body>
</html>